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Online ISSN : 2349-8080 Issues : 12 per year Publisher : Excellent Publishers Email : editorinchiefijcrbp@gmail.com |
Weed plants, commonly called "weeds", represent a major constraint for Ivorian market garden production. This study aims to assess the diversity and harmfulness of weeds in the market gardens of the mountainous zone in the West of Côte d'Ivoire. The characterisation of the weed flora was carried out in 32 market garden crop plots in the Departments of Man and Biankouma. It combined itinerant surveys and plot surveys within 119 quadrats of 4 m² using the Braun-Blanquet phytosociological method. In total, 14 market garden crops were identified, including cabbage (19%), lettuce (19%), parsley (10%), etc. The inventories identified 63 weed species, distributed across 53 genera and 24 families, with a predominance of Poaceae, Asteraceae and Fabaceae. On average, 7.83 ± 2.55 species per quadrat were recorded. The similarity index between the Departments of Man and Biankouma is 75.24%, indicating a strong floristic similarity. Four identified species groups (G1, G4 and G5) represent an agronomic constraint in the mountainous zone. The most harmful weeds are Eleusine indica, Portulaca oleracea, Ageratum conyzoides, Ipomoea lacunosa, Trianthema portulacastrum, Cyperus microiria and Acmella oleracea. They should be subject to targeted management to reduce their impact on yields.
